首页
登录
职称英语
[originaltext] Not until somewhat recently (that is, in terms of human histo
[originaltext] Not until somewhat recently (that is, in terms of human histo
游客
2024-02-16
48
管理
问题
Not until somewhat recently (that is, in terms of human history) did people find a need for knowing the time of day. As best we know, 5000 to 6000 years ago great civilizations in the Middle East and North Africa initiated clock-making. With their bureaucracies and formal religions, these cultures found a need to organize their time more efficiently.
The Egyptians were the next to formally divide their day into parts something like our hours. Obelisks (slender, tapering, four-sided monuments) were built as early as 3500 B. C. Their moving shadows formed a kind of sundial, enabling citizens to partition the day into two parts by indicating noon. They also showed the year’s longest and shortest days when the shadow at noon was the shortest or longest of the year. Later, markers added around the base of the monument would indicate further time subdivisions.
Another Egyptian shadow clock or sundial, possibly the first portable timepiece, came into use around 1500 B.C. to measure the passage of "hours". This device divided a sunlit day into 10 parts plus two "twilight hours" in the morning and evening. When the long stem with 5 variably spaced marks was oriented east and west in the morning, an elevated crossbar on the east end cast a moving shadow over the marks. At noon, the device was turned in the opposite direction to measure the afternoon "hours".
In the quest for more year-round accuracy, sundials evolved from flat horizontal or vertical plates to more elaborate forms. One version was the hemispherical dial, a bowl shaped depression cut into a block of stone, carrying a central vertical gnomon (pointer) and scribed with sets of hour lines for different seasons. The hemicycle, said to have been invented about 300 B. C. , removed the useless half of the hemisphere to give an appearance of a half bowl cut into the edge of a squared block.
选项
A、the sun.
B、the moon.
C、shadows.
D、sandals.
答案
C
解析
此题考查听细节的能力。此题只要紧抓关键词组“the longest and the shortest days of the year”,有的考生选B是因为把moving误听为moon。选C的考生是混淆了“sandals”和“shadows”。
转载请注明原文地址:https://tihaiku.com/zcyy/3457169.html
相关试题推荐
[originaltext]M:Howaretheirtalksgoingon?Havetheyreachedanyagreement?
[originaltext]M:Howaretheirtalksgoingon?Havetheyreachedanyagreement?
[originaltext]Thereisprobablynoareaofhumanactivitiesinwhichourva
[originaltext]Thereisprobablynoareaofhumanactivitiesinwhichourva
[originaltext]Thereisprobablynoareaofhumanactivitiesinwhichourva
[originaltext]AveryspecialweddingtookplaceonJuly,31inasmalltown
[originaltext]AveryspecialweddingtookplaceonJuly,31inasmalltown
[originaltext]W:Howareyoudoing,Henry?M:(23)Tobehonest,I’mreallyfed
[originaltext]W:Howareyoudoing,Henry?M:(23)Tobehonest,I’mreallyfed
[originaltext]W:John,lookatthiscoat.Youboughtitformewhenyouwereco
随机试题
[originaltext]W:Goodmorning,Sam.M:Goodmorning,Mary,howareyou?W:Well
Ninety-sixpercentofAmericanhomeshaveatleastonetelevisionsetwhich
WhyIBecameaTeacher:toPassonMyLoveofLiteratureA)Likelotso
Itiscommonforolderpeopletoforgetthings.NowanAmericanstudyhasfo
某设备工程项目,承包商甲按表4.1所列数据投标报价并中标,与业主签订了固定总
A.苍附导痰丸合桂枝茯苓丸 B.补肾祛瘀方 C.大黄虫丸 D.香棱丸 E
不同的家庭形态,理财需求和具体理财规划内容也不尽相同。对于青年家庭、中年家庭和老
在经纪活动中,发生委托行为的必要前提是存在着可能实现委托人目的的第三主体,即委托
患者女性,47岁。不规则阴道流血半年,全身体检和妇检子宫、附件均无异常。此患者最
背景资料 某防波堤工程总长800m,抛石斜坡堤结构,采用常规的爆炸排淤填石法处
最新回复
(
0
)